AITA For asking for ID when someone wanted to look in my bag?

The other day I was in a store looking at perfumes. I got a text from my husband and took my phone out of my bag, replied, and put it back in my handbag. As I was leaving the store a woman blocked my way and asked to look through my bag as she saw me put something in it (my phone). She was dressed in a blouse and pants, but had no name tag or anything with the stores name on her clothing. I asked if she worked there, and she said yes, then asked to look at my bag again. I hesitated, and said she didn't have any name tag. An older man walked up to us (wearing a polo and shorts) and she said he was the manager. The man then asked to look in my bag, but again, no name tag or identifying marks on his clothes. I had also seen the same man 10 minutes prior yelling at someone in the carpark. I refused, and then a second man approached, wearing a t-shirt that had 'security' on it. No walkie-talkie, badge, name tag, just t-shirt and shorts. He asked to look in my bag. At this point I sure this was a scam of some kind, and walked to the register. I asked the woman behind the counter if the original woman worked there and if the older man was her manager. The woman behind the counter confirmed their identities, and I showed them my bag before leaving the store. All three of them gave me dirty looks as I was leaving, and while at the time I felt justified, I am now wondering if I was the asshole.